JP2003079976A - Seat cushion and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat cushion and a method of manufacturing the same, which cushion can not only recycle resources but also be improved in productivity through the remarkable improvement of bonding workability and yet looks very attractive also in design as a final product. SOLUTION: The method of manufacturing a seat cushion comprises the steps of forming a narrow and deep groove 2 in a seat cushion pad 1 at the time of foam molding, integrally fixing a male hook-and-loop fastener 5 to the bottom of the groove 2, sewing a female hook-and-loop fastener 4 to a cover member 3 to form a loop, tucking the female hook-and-loop fastener 4 at the side of the cover member 3 into the groove 2 after the pad is molded to press the female hook-and-loop fastener 4 onto the male hook-and-loop fastener 5 so as to connect the cover member 3 to the seat cushion pad 1 such that the former is deeply drawn into the latter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat cushion manufacturing method and a seat cushion mainly used for vehicle seats including automobiles. For more information,
A seat is formed by joining a seat cushion pad formed by foaming a foamable resin material such as urethane and a skin material for a seat cushion in a concave groove formed at a predetermined position of the seat cushion pad in a fixed and removable manner. The present invention relates to a seat cushion manufacturing method and a seat cushion in which a cushion pad is covered with a skin material.

[0002]

2. Description of the Related Art As a means for joining a seat cushion pad and a skin material in a concave groove formed on the seat cushion pad side, conventionally, the following means have been generally adopted. That is, as shown in FIG. 5, when the seat cushion pad 11 is foam-molded, the recessed groove 12 is formed at a predetermined position (joint portion with the skin material) of the seat cushion pad 11, and at the same time, the seat cushion pad 11 is slightly inserted into the pad from the bottom of the recessed groove 12. The metal wire 13 is inserted in the recessed position, and the part 12a of the recessed groove 12 is formed deeper than the insert position of the wire 13 to expose a part of the insert wire 13 to the bottom of the recessed groove 12.

On the other hand, the metal wire 15 is also inserted and held in the folded portion 14a of the seat cushion skin material 14, and after the foaming of the seat cushion pad 11 is completed, the wire 15 and the folded portion 14a on the skin material 14 side.
Is manually pushed into the groove 12 of the seat cushion pad 11 to be exposed at the deep portion 12a of the groove 12 and the wire 15 on the skin material 14 side.
A C-shaped metal fitting 16 is hooked between the two, and in this state, the C-shaped metal fitting 16 is deformed with a special tool called a hog ring gun so that its opening is narrowed. The wires 13 and 15 are attracted to each other to move the seat cushion pad 11 and the skin material 14 into the concave groove 12.
Join inside.

[0004]

However, in the case of the conventional seat cushion manufacturing method in which the above-described joining means is adopted, since the metal wire 13 is inserted into the seat cushion pad 11, Not only the foamable resin material such as urethane, which is a constituent material of the used seat cushion pad 11, cannot be recycled as it is, but also the wire 15 on the skin material 14 side and the recessed portion 12 of the folded portion 14a can be formed. Joining work is very troublesome, such as pushing or hooking the joining metal fitting 16 between both wires 13 and 15 by hand, and using a special tool to deform the joining metal fitting 16, and a great deal of labor. Was required, and it lacked productivity. Therefore,
In other words, considering the workability of joining, the depth dimension D of the groove 12 is
Has its own restrictions (generally up to 25 mm),
The width dimension W also needs to be increased. As a result, the skin material 1
Since the depth of suspension in the groove 12 at the joint portion of 4 was shallow, the product as a whole lacked a refreshing feeling and a three-dimensional appearance, and it had no choice but to give a poor-looking finish in terms of design.

The present invention has been made in view of the above-mentioned circumstances, and it is possible to recycle resources, and also to significantly improve the joining workability to improve the productivity.
It is an object of the present invention to provide a seat cushion manufacturing method and a seat cushion that can provide a very nice-looking finish in terms of design.

[0006]

In order to achieve the above object, a method of manufacturing a seat cushion according to claim 1 of the present invention is a seat cushion pad formed by foaming a foamable resin material, and a seat cushion for this seat cushion. A method for manufacturing a seat cushion in which a seat cushion pad is covered with a skin material by joining a skin material and a groove formed in a predetermined position of the seat cushion pad, the method comprising: A narrow and deep groove is formed at a predetermined position of the groove, and at the same time, one surface fastener of a pair of male and female surface fasteners is integrally fixed to the bottom of the groove, while the other side is formed on the back surface side of the skin material. After attaching the surface fastener, and after the seat cushion pad is formed, the other surface fastener attached to the back surface side of the skin material is Is characterized in that the bonding by physical engagement on one surface fastener are integrally fixed to the concave groove bottom pushed into the groove of the seat cushion pad with the skin material partially attached.

A seat cushion according to a fifth aspect of the present invention comprises a seat cushion pad formed by foam-molding a foamable resin material and a skin material for the seat cushion.
A seat cushion in which a seat cushion pad is covered with a skin material by being joined in a recessed groove formed at a predetermined position of the seat cushion pad, wherein the recessed groove is narrow and deep during foam molding of the seat cushion pad. While being formed, one surface fastener of the pair of male and female surface fasteners is integrally fixed to the bottom of the groove, while the other surface fastener is attached to the back surface side of the skin material. The other surface fastener attached to the back surface side of this skin material is pushed into the recess groove of the seat cushion pad together with the attachment skin material portion thereof and physically attached to the one surface fastener integrally fixed to the bottom portion of the recess groove. The seat cushion pad and the seat cushion skin material are joined by engaging with each other.

According to the first and fifth aspects of the present invention having the above-mentioned features, one surface fastener is integrally formed at the bottom of the recessed groove which is narrowly and deeply formed when the seat cushion pad is foam-molded. After fixing, after molding, pushing the skin material to which the other surface fastener is attached in advance into the recessed groove, it is very easy and only requires a work that requires little force, and it becomes a seat cushion pad. It is possible to bond with the skin material and improve the productivity of the seat cushion, and also to hang the skin material deeply in the groove to make it clear at the joint part of the skin material that covers the seat cushion pad, and This makes it possible to bring out a clean line, and a very nice-looking finish can be obtained in terms of design. In addition, since the seat cushion pad is not inserted with a different material such as a metal wire, the used seat cushion pad can be crushed as it is for recycling.

In the seat cushion manufacturing method and seat cushion according to the present invention described above, as the surface fastener on the back surface side of the skin material, as described in claim 2 and claim 6, the loop-like wound skin is used. It is desirable to sew on the material. In this case, when pushing the surface fastener mounting part of the skin material into the groove, even if there is some disturbance in the pushing posture, some part of the loop winding surface fastener is the surface on the bottom side of the groove. The fastener is physically engaged to obtain a predetermined joining force. Therefore,
The joining work can be performed more easily and efficiently.

Further, in the seat cushion manufacturing method and the seat cushion according to the present invention described above, the concave groove formed in the seat cushion pad has a width relative to a width dimension thereof as described in claim 3 or claim 7. It is preferable that the depth dimension is set to be 2 times or more, and more preferably, the depth dimension is set to be 3 times or more as described in claim 4 or claim 8. By setting such a dimensional relationship, it is possible to hang the skin material deeply and further improve the design.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an example of a seat cushion pad manufactured by a method for manufacturing a seat cushion according to the present invention. The seat cushion pad 1 illustrated here is applied to a backrest for a rear seat of a passenger car. The center support part 1a and side support parts 1b, 1b on both sides in the width direction thereof are provided, and a headrest part 1c is provided at the center upper end position of the center support part 1a. The respective parts 1a, 1b, 1c are integrated by the foam molding.

At the center position of the width of the center support portion 1a of the seat cushion pad 1, there is a groove 2 extending over substantially the entire length of the seat cushion pad 1 as shown by inserting a diagonal line in FIG. Has been formed,
By joining the seat cushion pad 1 and the seat cushion skin material 3 (see FIGS. 2 and 3) in the groove 2, a seat cushion in which the seat cushion pad 1 is covered with the skin material 3 is manufactured.

FIG. 2 is a cross-sectional view showing the detailed structure of the joint portion between the seat cushion pad 1 and the skin material 3, and the center support portion 1 in the seat cushion pad 1 described above.
The concave groove 2 formed along the width center position of a has a depth dimension D1 (D1 / W1) twice or more, preferably three times or more narrow and deep with respect to the width dimension W1. ,
D1 = 30 to 35 mm. A pair of male and female resin surface fasteners 4, 5 are provided on the bottom of the groove 2.
Among them, the male hook-and-loop fastener 5 is integrally fixed. The male surface fastener 5 has a plurality of engaging elements 5b projecting from one surface of a strip-shaped base portion 5a and an anchor portion 5c on the other surface thereof. 1 and embedded in the engaging element 5
It is integrally fixed to the seat cushion pad 1 in a state where b is projected toward the opening side of the concave groove 2.

On the other hand, a female surface fastener 4 is attached to the back surface side of the skin material 3. The female surface fastener 4 has a plurality of engaged portions 4b capable of physically engaging with the engaging element 5b of the male surface fastener 5 on one surface of the flexible strip 4a. The wound portion 4b is formed in a loop shape so that the engaged portion 4b is located on the outer side, and the loop both ends of the flexible strip 4a are formed at the overlapping positions of the two skin materials 3 and 3. It is attached to the skin material 3 in a loop shape by overlapping and sewing on both outer surfaces.

After the foaming of the seat cushion pad 1 is completed, the female loop-shaped fastener 4 attached to the back side of the skin material 3 is sewn together with the skin material portion, and the groove of the seat cushion pad 1 is recessed. As shown in FIG. 3, the engaged portion 4b and the engaging element 5b are physically engaged with each other by pushing them into the male surface fastener 5 at the bottom of the concave groove 2 and pushing the sheet into the seat. The cushion pad 1 and the skin material 3 are joined to each other, whereby a seat cushion for a rear seat backrest in which the seat cushion pad 1 is covered with the skin material 3 is manufactured.

As described above, a narrow and deep concave groove 2 is formed in the seat cushion pad 1 to be foam-molded, and at the same time, a male hook-and-loop fastener 5 is integrally fixed to the bottom of the concave groove 2 and then the concave portion is formed. The seat cushion pad 1 and the skin material 3 can be separated from each other simply by pushing in the skin material 3 to which the female hook-and-loop fastener 4 is preliminarily mounted in the groove 2 and by performing a work requiring little force. The seat cushion can be joined by physical engagement to improve the productivity of the seat cushion, and the seat material 3 covered with the seat cushion pad 1 by deeply suspending the seat material 3 in the recessed groove 2 is joined. A line that is clear and refreshing can be highlighted in the place, and a product (seat cushion) with a very good-looking finish can be obtained in terms of design. Further, since it is not necessary to insert a different material such as a metal wire into the seat cushion pad 1, it is possible to crush the used seat cushion pad as it is and provide it for resource recycling.

In particular, when the female fastener 4 on the skin material 3 side is wound in a loop shape and sewn to the skin material 3, when the surface fastener 4 mounting portion of the skin material 3 is pushed into the groove 2, it is pushed in. Even if there is some disturbance in posture,
Some part of the loop-shaped winding surface fastener 4 physically engages with the male surface fastener 5 on the bottom side of the concave groove 2 to obtain a predetermined joining force, and the joining work is further facilitated. And it can be done efficiently.

It should be noted that the female surface fastener 4 facing the skin material 3 side
As shown in FIG. 4, both ends of the loops of the flexible strip 4a are superposed on each other, and the superposition position is on one surface of the superposition positions of the two skin materials 3, 3. It may be attached to the skin material 3 in a loop shape by overlapping and sewing.

[0019]

As described above, according to the present invention, a narrow and deep groove is formed in the seat cushion pad during foam molding of the seat cushion pad, and at the same time, one of a pair of male and female is formed at the bottom of the groove. By fixing the surface fasteners integrally, after the pad is formed, the skin material with the other surface fastener attached in advance is pushed into the concave groove, and it is very easy and does not require much force. Thus, the seat cushion pad and the skin material can be easily and quickly joined together, the productivity of the seat cushion can be improved, and the joint portion of the skin material can be hung deeply in the groove. It is possible to obtain a finished product that is very attractive in terms of designability because it has a clear line at the joint and a clear line is raised. That. In addition, since a different material such as a metal wire is not inserted at all in the seat cushion pad, the used seat cushion pad can be crushed as it is and used for resource recycling.

Particularly, as described in claims 2 and 6, by adopting a means for winding the surface fastener on the skin material side in a loop shape and sewing it to the skin material, the surface fastener mounting portion of the skin material is adopted. Even if there is some irregularity in the pushing posture when pushing into the groove, some part of the loop winding surface fastener physically engages with the surface fastener on the bottom side of the groove and A joining force can be obtained, so that the joining operation can be performed more easily and efficiently.

Further, as described in claims 3, 4 and 7, 8, the depth dimension of the concave groove is set to be twice or more or three times or more of the width dimension, so that the skin material is It can be hung deeply to further improve the design.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a seat cushion pad manufactured by a method of manufacturing a seat cushion according to the present invention.

FIG. 2 is an enlarged vertical cross-sectional view of a main part showing a detailed structure of a joint portion between a seat cushion pad and a skin material.

FIG. 3 is an enlarged vertical cross-sectional view of a main part showing a state where joining of a seat cushion pad and a skin material is completed.

FIG. 4 is an enlarged cross-sectional view of a main part showing another example of a mounting state of the female surface fastener to the skin material side.

FIG. 5 is an enlarged vertical cross-sectional view of a main part showing a conventional joining means for joining a seat cushion pad and a skin material.

[Explanation of symbols]

1 seat cushion pad 2 groove 3 skin material 4 Female surface fasteners 5 Male surface fasteners D1 Groove depth W1 groove width

Claims (8)

[Claims] 1. A seat cushion pad is obtained by joining a seat cushion pad formed by foam molding an expandable resin material and a seat cushion skin material in a groove formed at a predetermined position of the seat cushion pad. A method for manufacturing a seat cushion covered with a skin material, wherein a narrow and deep groove is formed at a predetermined position of a seat cushion pad during foam molding, and at the same time, a pair of male and female surface fasteners are formed at the bottom of the groove. One of the surface fasteners is integrally fixed, while the other surface fastener is attached to the back surface side of the skin material, and after the formation of the seat cushion pad is completed, the other surface fastener is attached to the back surface side. The hook-and-loop fastener together with its attachment skin material is pushed into the groove of the seat cushion pad to be integrally fixed to the bottom of the groove. A method for manufacturing a seat cushion, which comprises joining the one surface fastener by physical engagement. 2. The surface fastener on the back surface side of the skin material is wound in a loop shape and sewn to the skin material.
A method for manufacturing a seat cushion according to. 3. The method for manufacturing a seat cushion according to claim 1, wherein the recessed groove formed in the seat cushion pad is set to have a depth dimension twice or more the width dimension thereof. 4. The method for manufacturing a seat cushion according to claim 1, wherein the recessed groove formed in the seat cushion pad has a depth dimension three times or more the width dimension thereof. 5. A seat cushion pad is obtained by joining a seat cushion pad formed by foam-molding a foamable resin material and a seat cushion skin material in a groove formed at a predetermined position of the seat cushion pad. A seat cushion covered with a skin material, wherein the concave groove is formed narrow and deep during foam molding of a seat cushion pad, and one surface of a pair of male and female surface fasteners is formed on the bottom of the concave groove. While the fastener is fixed integrally, the other surface fastener is attached to the back side of the skin material, and the other surface fastener attached to the back side of this skin material is attached to the attachment skin material part. To push into the groove of the seat cushion pad to physically engage one surface fastener integrally fixed to the bottom of the groove. A seat cushion characterized in that a seat cushion pad and a skin material for the seat cushion are joined together. 6. The surface fastener on the back surface side of the skin material is wound in a loop shape and sewn to the skin material.
Seat cushion described in. 7. The seat cushion according to claim 5, wherein the recessed groove formed in the seat cushion pad has a depth dimension twice or more the width dimension thereof. 8. The seat cushion according to claim 5, wherein the recessed groove formed in the seat cushion pad has a depth dimension three times or more the width dimension thereof.